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Siemens RDF800KN.., RDF800KN/VB, RDD810KN/NF Basic documentation CE1P3174en
Smart Infrastructure 2020-02-21
3.11 KNX communications
The RDF800KN../RDF800KN/VB/RDD810KN.. KNX room thermostats support
communications as per KNX specification.
S-mode Standard mode; engineering using group addresses.
LTE mode Logical Tag Extended mode, for easy engineering, used in
conjunction with Synco.
3.11.1 S-mode
This mode corresponds to KNX communications.
Connections are established via ETS by assigning communication objects to group
addresses.
3.11.2 LTE mode
LTE mode was specifically designed to simplify engineering. In contrast to S-mode,
there is no need to create individual connections (group addresses) in the tool. The
devices establish connections autonomously.
To make this possible, the following conditions must be fulfilled:
· Every device or subdevice is located within a zone.
· Every data point (input or output) is assigned to a zone.
· Every data point (input or output) has a precisely defined "name".
Whenever an output and input, with the same name, is located in the same zone, a
connection is established automatically, as shown in the following diagram.
Definitions
RDF
Chiller
Sensor
Outdoor temperature zone 31
Refr. distr zone 1
Geogr. zone 2.5.1
Heat distr zone 1
Cool demand
Outdoor temperature
Outdoor temperature
Cool demand
Outdoor temperature zone 31
Refr. distr zone 1
Heat demand
Time switch
Operating mode Operating mode
Boiler
Heat distr zone 1
Heat demand
Geogr. zone 2.5.1 or 2.1.1
Room temperature